If an instructor would be annoyed of a student who watched Steve Martin's videos, I'd say that's a major red flag and to find another instructor. BFD. Use that information to discuss why the instructor does things and not what Steve Martin teaches. Use it as a teaching opportunity.
I don't think that's necessarily true. A sm course is alot of work for the instructor to fiddle and futz with stuff. I don't think most instructors would openly get annoyed, but at the same time if you're constantly asking questions from somebody's online class and slowing down class they're not going to be happy about it. I get annoyed when my patients come in and constantly interrupt me with bs they read from Dr. Google that has nothing to do with what I'm trying to explain to them. They don't know I'm annoyed, but it's definitely annoying. I'm sure a sm instructor is no different. If they're barraged with stuff related to setting up al80s when they're trying to put a student in a set of lp85s it could get annoying.